BUG with GG Antigravity

Google Antigravity
1

Hi everyone,

I’m currently encountering a 503 Service Unavailable error when calling the Gemini API (model: gemini-3-flash-agent).

Error details:

  • Status: 503 UNAVAILABLE

  • Reason: MODEL_CAPACITY_EXHAUSTED

  • Message: “No capacity available for model gemini-3-flash-agent on the server”

I’ve tried switching accounts, but the issue still persists, so it doesn’t seem to be account-related.

Has anyone else experienced this issue?
Is this due to server overload, or is there something I can do on my end to mitigate it?

Any suggestions (e.g., retry strategies, alternative models, or configuration changes) would be greatly appreciated.

Thanks in advance!